hal_ee24xx: add bus frequency parameter

[fpoussin]

Adding a way to handle different bus frequencies.
This is needed to calculate the write timeout.

Fixes #379

[Copilot]

Pull Request Overview

This PR adds support for configurable I2C bus frequency to the hal_ee24xx EEPROM driver to enable proper calculation of write timeouts. The change allows users to specify the bus frequency through configuration rather than relying on a hardcoded value.

Key changes:

• Added bus_hz parameter to I2CEepromFileConfig structure
• Modified timeout calculation to use configurable frequency with fallback to default
• Updated function signatures to pass bus frequency parameter

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
os/hal/src/hal_ee24xx.c	Updated timeout calculation logic and function signatures to support configurable bus frequency
os/hal/include/hal_ee24xx.h	Added bus_hz field to configuration structure with documentation

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